GT864-3G Terminal Product Description
80269ST10071a Rev.0 - 14/09/0
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page 24 of 41
various operating states. These states are described in following table.
Operating state of
GT864-3G Terminal
Power up LED state
device off
permanently off
net search / not registered
Fast blinking (period=1s, LED
on
=0,5s)
registered full service
Slow blinking (period=3s, LED
on
=0,3s)
a call is active
permanently on
2.13.6.2
Status LEDs (one yellow, one red)
These LEDs can be controlled e.g. by an external micro controller via AT commands issued to the
terminal via the serial RS232 interface or USB port. They can be used for signalling any useful
status of the external application such as:
•
error indication
•
status of communication (UMTS, GPRS, SMS, CSD, etc.)
•
status of GSM-network (to simulate GSM LED)
•
quality of service
2.13.7
Automatic answer (Data or FAX)
After a specified number of rings, the module will automatically answer with a beep. The user can
set the number of rings by means of the command ATS0=<n>.
2.13.8
Supplementary services (SS)
•
Call
Barring,
•
Call Forwarding,
•
Calling Line Identification Presentation (CLIP),
•
Calling Line Identification Restriction (CLIR),
•
Call Waiting, other party call Waiting Indication,
•
Closed User Group supplementary service (CUG),
•
Advice of Charge,
•
Unstructured SS Mobile Originated (MO)
